calculatordlg.cpp

Visual c++.程序设计培训教程

// calculatorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "calculator.h"
#include "calculatorDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg dialog

CCalculatorDlg::CCalculatorDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCalculatorDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCalculatorDlg)
	m_display = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_bit = m_bit2 = 0;
	m_base = m_middle = m_end =0;
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCalculatorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCalculatorDlg)
	DDX_Text(pDX, IDC_EDIT1, m_display);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCalculatorDlg, CDialog)
	//{{AFX_MSG_MAP(CCalculatorDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(ID_CE, OnCe)
	ON_BN_CLICKED(IDC_BUTTON10, OnButton10)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
	ON_BN_CLICKED(IDC_BUTTON6, OnButton6)
	ON_BN_CLICKED(IDC_BUTTON7, OnButton7)
	ON_BN_CLICKED(IDC_BUTTON8, OnButton8)
	ON_BN_CLICKED(IDC_BUTTON9, OnButton9)
	ON_BN_CLICKED(IDC_BUTTONADD, OnButtonadd)
	ON_BN_CLICKED(IDC_BUTTONDIV, OnButtondiv)
	ON_BN_CLICKED(IDC_BUTTONDOT, OnButtondot)
	ON_BN_CLICKED(IDC_BUTTONEQU, OnButtonequ)
	ON_BN_CLICKED(IDC_BUTTONMUT, OnButtonmut)
	ON_BN_CLICKED(IDC_BUTTONSUB, OnButtonsub)
	ON_EN_MAXTEXT(IDC_EDIT1, OnMaxtextEdit1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg message handlers

BOOL CCalculatorDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CCalculatorDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CCalculatorDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCalculatorDlg::OnButton1()  // 数字按钮"1"的单击处理函数
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +1;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnCe()  // 清除按钮的单击处理函数
{
	// TODO: Add your control notification handler code here
	m_display = 0;
	m_end = m_bit = m_base = m_middle = 0;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton10()  // 数字按钮"0"的单击处理函数
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +0;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton2()  // 数字按钮"2"的单击处理函数
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +2;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton3()  // 数字按钮"3"的单击处理函数
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +3;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +4;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton5() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +5;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton6() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +6;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton7() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +7;
	m_display = m_end;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnButton8() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +8;
	m_display = m_end;
	UpdateData(FALSE);
	
}

void CCalculatorDlg::OnButton9() 
{
	// TODO: Add your control notification handler code here
	m_end = m_end*10 +9;
	m_display = m_end;
	UpdateData(FALSE);
	
}

void CCalculatorDlg::OnButtonadd()  // 加号运算符
{
	// TODO: Add your control notification handler code here
	Result();   // 求值
	m_bit = 1;
}

void CCalculatorDlg::OnButtonsub()   // 减号运算符
{
	// TODO: Add your control notification handler code here
	Result();   // 求值
	m_bit = 2;
}

void CCalculatorDlg::OnButtonmut()   // 乘号运算符
{
	// TODO: Add your control notification handler code here
	Record();   // 记录
	m_bit = 3;
}

void CCalculatorDlg::OnButtondiv()   // 除号运算符
{
	// TODO: Add your control notification handler code here
	Record();   // 记录
	m_bit = 4;
}

void CCalculatorDlg::OnButtonequ()   // 等号运算符
{
	// TODO: Add your control notification handler code here
	Result();   // 求值
	m_bit = 1;
	m_bit2 = m_middle = m_end = 0; // 清零
}

void CCalculatorDlg::OnButtondot() 
{
	// TODO: Add your control notification handler code here
	
}

void CCalculatorDlg::OnMaxtextEdit1() 
{
	// TODO: Add your control notification handler code here
	
}

void CCalculatorDlg::Result()
{
	switch(m_bit)
	{
	case 1://"+"
		m_base += m_end;
		break;
	case 2://"-"
		m_base -= m_end;
		break;
	case 3://"*"
		if(m_bit2==0)	m_base *= m_end;
		else if(m_bit2==1)   m_base += m_middle*m_end;
		else if(m_bit2==2)	m_base -= m_middle*m_end;
		break;
	case 4://"/"
		if(m_end==0)
		{
			MessageBox("除数为0!");
			OnCe();
			return;
		}
		if(m_bit2==0)	m_base /= m_end;
		else if(m_bit2==1)   m_base += m_middle/m_end;
		else if(m_bit2==2)	m_base -= m_middle/m_end;
		break;
	default:
		m_base = m_end;
		break;
	}
	m_bit = 0;
	m_bit2 = 0;
	m_end = 0;
	m_display = m_base;
	UpdateData(FALSE);
}

void CCalculatorDlg::Record()
{
	switch(m_bit)
	{
	case 1://"+"
		m_middle = m_end;
		m_bit2 = 1;
		break;
	case 2://"-"
		m_middle = m_end;
		m_bit2 = 2;
		break;
	case 3://"*"
		m_base *= m_end;
		m_bit2 = 0;
		break;
	case 4://"/"
		if(m_end==0)
		{
			MessageBox("除数为0!");
			OnCe();
			return;
		}
		m_base /= m_end;
		m_bit2 = 0;
		break;
	default:
		m_base = m_end;
		break;
	}

	m_end = 0;
	if(!m_bit2)
	{
		m_display = m_base;
		UpdateData(FALSE);
	}

}